Abstract: More whiteness, especially for nylon fibers, is retained when a finish is used to provide to the fiber surface an effective amount of a phenyl phosphinate. Potassium phenyl phosphinate, in amounts as small as 0.005% to 0.3% by weight of the fiber, is particularly effective.

Abstract: A composition which includes polyvinylpyrrolidone and a polyurethane is melt processed to give a shaped article. The melt processing may be a coextrusion with a substrate polymer to give a shaped article having the composition coated on the surface thereof. The article surface is lubricious when contacted with water.

Abstract: A process for preparing spin-oriented feed yarns that may be processed into flat yarns by draw-warping, involving the use of lower withdrawal speeds than customary hitherto for preparing spin-oriented feed yarns, and preferably low draw-tensions.

Abstract: Carbon fiber precursors from pitchy materials are processed by applying thereonto an aqueous emulsion containing a single silicone oil or a mixture of silicone oils selected from polydimethyl siloxane, phenyl modified polydimethyl siloxane and aminoalkyl modified polydimethyl siloxane and having kinetic viscosity at 25.degree. C. of 100 centistokes or less, an alkanolamine salt of aliphatic monocarboxylic acid with 8-18 carbon atoms, and one or more non-ionic surfactants selected from polyoxyethylene alkylphenylethers polyoxyethylene alkylates, polyoxyethylene alkylaminoethers, and aliphatic monocarboxylic alkanolamides such that 0.1-5 wt % by solid deposit on fiber from this aqueous emulsion apply to the pitch fibers during any of the processes from the spinning and to the oxidizing.

Abstract: A pottery bowl with an integral catch tray. The process of forming the pottery bowl includes molding a bowl with a thickened sidewall adjacent to the bottom thereof. The bowl is then placed on a potter's wheel and a shaping tool is inserted into the thickened portion to form an integral catch tray. The shaping tool for forming the catch tray preferably has a rounded tip from which a stream of water is emitted.

Abstract: Pourable particles of normally soft and tacky plastic materials are formed by extruding the molten plastic material into contact with a cooling fluid containing a non-sticky material that is compatible with the plastic material, cutting the plastic material into particles, separating these particles from the cooling fluid, and contacting these particles with a second compatible non-sticky material.

Abstract: A process for the discontinuous or (preferably) continuous production of dry spun hydrophilic acrylic fibers and threads with a core/sheath structure which have improved color fastness properties, more uniform cross-sections and better processing characteristics. By employing a new after-treatment combination of more intensive counterflow washing, stretching in steam, fixing in steam and careful drying of the fibers as staple fibers, improved hydrophilic fibers with a water retention capacity above 30% can be obtained from spinning solutions which have a much lower non-solvent content than is necessary in the present-state of the art for obtaining a high water retention capacity of the order indicated above.

Abstract: A process for dry spinning of synthetic polymers, in particular PAN threads containing more than 85 wt. % acrylonitrile in the PAN (co)polymer, with high spinning chimney capacities of at least 20 kg PAN solid per spinning chimney and hour, using superheated steam as the spinning gas and with in-chimney finishing with water or aqueous finishes.

Abstract: A process for the dry spinning of synthetic polymers, in particular polyacylonitrile fibres, from solutions in high polar solvents, such as dimethylformamide, which are heated to 100.degree.-150.degree. C. shortly upstream of the spinneret and spun there by spinnerets having a certain shape, and in the spinning cell the specific energy supply is at least 0.090 kWh per m.sup.2 of heated cell area, the cell is charged with at least 70 m.sup.3 (S.T.P.) of hot air per hour, and the filaments are treated in the lower part of the cell with water or aqueous preparations, so that the temperature of the filaments which leave the cell is decreased below 110.degree. C. Under these conditions, the unexpectedly high spinning cell outputs of at least 20 kg of PAN solid per spinning cell per hour can be achieved without yellowing or self-ignition of the filaments occurring.

Abstract: A method for manufacturing a cover for a can-like container providing improved peelability of a handle. The cover is made by forming a second resin layer by injection molding or compression forming on a multi-layer sheet which oxygen, water, and the like cannot permeate. A thermally weldable first resin layer is provided on the upper surface of the multi-layer sheet. The handle is formed by the second resin layer. A treatment is carried out for allowing the handle to be easily peeled off the multi-layer sheet to all or part of a region of the multi-layer sheet in contact with the underside of the handle.

Abstract: The invention is directed to an electronic component including a casing which is formed by molding a resin material around the stator and the rotor, the rotor being partially exposed through the casing, wherein at least a portion of the surface of the rotor which is in contact with the casing is subjected to a mold releasing treatment, so that the rotor is freely rotatable with respect to the stator and the casing.

Abstract: A process for the production of crimped filaments and fibers of acrylonitrile polymers of copolymers containing at least 40% by weight acrylonitrile units, by dry spinning from highly polar solvents, where the filaments are brought to extremely low solvent contents in the actual spinning tube by a minimum of superheated steam prepared in the absence of water at very high spinning tube temperatures and spinning gas temperatures, but are cooled to low filament temperatures in the spinning tube by application of water or aqueous finishes in a quantity equivalent to more than 10% by weight moisture. In this way, spun PAN filaments of good natural color are safely obtained, in which there is no washing stage and no drying stage. Acrylic fibers and filaments combining a vacuolestable structure with a very high degree of whiteness and gloss are thus obtained with densities of at least 1.180 g/cm.sup.3, giving shrinkage-free to high-shrinkage fibers, depending on the aftertreatment applied.

Abstract: A process for reducing die drool during extrusion of highly filled polymeric resins for production of jacketing insulation for wire and cable by incorporating into the surface of the die in contact with said resin a compound which decreases the adhesiveness between the polymeric resin and the die surface, said compound being employed in an amount sufficient to reduce die drool.

Abstract: A yarn comprising polyester fibers having an improved balance of properties (tenacity and boiling water shrinkage) is produced within predetermined limits. The polyester yarn is prepared by cold drawing a partially oriented feeder yarn, partially annealing the drawn yarn, and subsequently annealing the partially annealed cold drawn yarn at controlled tensions.

Abstract: A method for forming a one-sided cling stretch wrap film by adhering a particulate antiblock to one surface of the film while the surface is in a semiplastic state, applying a particle-embedding force to the surface and removing excess particulate matter. The thermoplastic stretch wrap film exhibits a significant level of cling on one surface but no appreciable cling force on the other, the latter surface exhibiting a slide property when in contact with a film or like surface due to the presence of particulate antiblock agent mechanically bonded thereto. The film can be used to overwrap one or a group of articles to form a unitized packaged unit employing any of the known and conventional tension-wrapping techniques. Because of its one-sided cling and slide capabilities, pallet loads overwrapped with the film and in mutual contact avoid film tearing or destruction when the pallet loads are separated from each other.

Abstract: PTFE vascular tubing is guided on to a tapered ultrasonic horn as the horn is oscillating at a high frequency. This action causes the end of the tubing moved onto the horn to expand. The expanded tubing is then positioned on a mandrel having a desired shape, such as tapered, and resintered. The finished tubing with an expanded diameter on one end and a non-expanded diameter on the other end is then removed from the mandrel, and is ready for use. Untapered tubing can also be radially expanded by this method to provide a thinner wall.

Abstract: Melt spinning method for the production of pre-oriented low-crystalline synthetic filaments which are distinguished by a high degree of uniformity and by the ability of being worked at high speeds in a friction-draw texturing process, according to which method the damping ratio of the spinning filament between the point of solidification and the winding unit, defined as the ratio of the fluctuation range of the filament tension at the beginning and at the end of the above-defined filament path is <0.10, and a driven roller with a freely rotating additional small roller in multiple wrap-around contact is utilized as the draw-off roller system.

Abstract: Process for producing spin-finish-free man-made fibers by melt spinning high polymers having a glass transition temperature of above 100.degree. C. and subsequently drawing the filaments by means of preheater godets to a preset draw ratio, wherein the filaments are not spin-finished prior to drawing but are impinged with a liquid which can evaporate residuelessly during drawing and the temperature of the preheater godet is set not less than 40.degree. C. higher than in the conventional process with spin finish application.

Abstract: Alumina fiber structures prepared by (i) preparing precursor fibers by spinning a viscous spinning solution containing compounds of metals including aluminum and an organic polymer compound in which the proportion of alumina in the total metals in the solution is at least 65% by weight of alumina when all metals are calculated as their oxides; (ii) laying the precursor fibers into a mat; (iii) applying a lubricant which is a solution of higher fatty acid ester in a hydrocarbon solvent to the fibers either before or after forming the mat; (iv) needling the lubricated mat; and (v) burning the obtained structure to convert the precursor fibers to alumina fibers, possess high tensile strengths and high peel strengths.

Abstract: In a method of manufacturing carbon fiber with less uniformity of physical strength in the longitudinal direction, an oil additive in a volatile medium is applied to an organic fiber after it is removed from a container and while the volatile medium has not completely evaporated from the fiber, and before the fiber is fed to a flameproofing furnace.

Abstract: A process for producing a reinforcing member in a form of a solid wire or rod that contains a highly oriented resin as principal component and in which a degree of orientation decreases from center to periphery of said solid wire or rod, said process using a die having a molding port comprising at least one concentric molten resin extruding nozzle having a side wall with an inner and outer surface and a projecting rod member disposed along a central axis of said nozzle, and said process comprising extruding a molten highly oriented resin through said nozzle as a lubricant is applied to the inner surface of the side wall of said nozzle. A process for producing a reinforcing member in a form of a hollow pipe having a solid wall with an inner and outer surface that contains a highly oriented resin as principal component and in which a degree of orientation of said resin decreases from the inner surface of the solid wall of the pipe to the outer surface.

Abstract: A high optical quality transparent plastic sheet having a polyurethane layer formed by reactive pouring or reactive pulverization onto a flat horizontal support of a reaction mixture containing a polyol component and an isocyanate component, with the surface of the polyurethane layer which was facing the support during the formation of the layer containing an acrylic polymer resulting from the contact, during deposition of the reaction mixture, of the reaction mixture with a thin acrylic layer previously deposited on the support. The acrylic layer and the polyurethane layer are interpenetrated.

Abstract: The body of a magnetic tape cassette is formed by injection molding of plastic material or the like, and is provided with a protecting film layer on at least a part of the outer surface thereof. The protecting film layer is bonded to the surface of the cassette body simultaneously with the molding of the cassette body by injecting molding material into a cavity of a plastic injection mold with a protecting film material being inserted into the cavity before injection.

Abstract: A process of producing carbon fibers, which comprises oxidizing polyacrylonitrile filaments having a tensile strength at 240.degree. C. of 0.3 g/d or higher and a tensile modulus at 240.degree. C. of 2.0 g/d or higher in an oxidizing atmosphere under a high tension of 0.2 g/d or higher, and carbonizing the oxidized filaments under a high tension.

Abstract: A plurality of rotational members which comprise an inner shell and an outer shell rotatable relative to each other and in which a soluble film is fixed to the inner periphery or the outer periphery of one of the shells, the shell with the soluble film fixed thereto is the shaping mold of a molding machine for molding the other shell, and a plurality of rotational members comprising an inner shell and an outer shell are molded through the soluble film, whereafter the soluble film is dissolved and removed.

Abstract: A method for catheter tipping including applying to a catheter blank a layer of a noncuring aminoalkyl terminated polysiloxane lubricant, mounting the lubricated blank on a mandrel and advancing the mandrel-catheter assembly into a heated die so that the die causes the heated tip of the blank to assume the shape of the die. The catheter may then be cut beyond the shaped tip and easily removed from both the die and the mandrel.

Abstract: A process for producing preoxidized fibers, which comprises preoxidizing acrylic fibers having a fluorine-containing surface active agent and at least one phosphoric surface active agent selected from the group consisting of compounds represented by the following formulae (I), (II) and (III), and preoxidizing the acrylic fibers thus-obtained: ##STR1## wherein R.sub.1 represents an aliphatic hydrocarbon group having 1 to 17 carbon atoms, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, and each represents a hydrogen atom, a lower alkyl group, a hydroxyethyl group or a hydroxyisopropyl group, ##STR2## wherein R.sub.5, R.sub.6 and R.sub.7, which may be the same or different, each represents a hydrogen atom or a hydroxyethyl group.

Abstract: The invention relates to a method of the manufacture of dimensionally stable, liquid-impermeable, flexible press bands, particularly for wet presses of paper making machines. With known manufacturing methods for such press bands, the provision of a structured surface for liquid discharge on the outer surface of the press band, which faces the fibrous web or the felts, is achieved either by reversing the press band after removal from the casting mould so that the structured surface becomes the outer surface of the band while the smooth surface forms the inside thereof, or by grinding drainage ducts into the outer surface of the press band. But especially in the case of small band diameters, reversing of such cast press bands causes serious problems and entails considerable expenditure, wherein the risk of damage to the band cannot be excluded and grinding of the drainage ducts is just as expensive.

Abstract: A method for the reductin of mold cycle time. A heat recoverable member in a compressed state is placed within a channel defined relative to the surface of a mold. A hardenable liquid used to form the article then flows in an accelerated manner through the channel. Thermal energy supplied to the heat recoverable material causes the heat recoverable material to expand within the channel, thereby displacing the hardenable liquid from the channel. The temperature of gelation of the hardenable liquid and the recovery temperature of the heat recoverable material may be selected such that the channels are substantially filled by the heat recoverable material prior to the hardening of the hardenable liquid. In this manner, the heat recoverable material becomes flush with the surface of the mold prior to hardening of the liquid so as to yield an article of manufacture having a relatively planar surface.

Abstract: A process for the production of high-quality carpet yarn from PBT having an intrinsic viscosity of 0.9 to 1.2 comprising an integrated spinning-draw texturing process, employing a transport speed to the texturing unit of at least 1,800 m/min.

Abstract: A multilayer molded article having improved appearance and feeling is produced by wetting a skin material including a fabric or a thermoplastic resin sheet as an outermost layer with at least one liquid material which is water, an aqueous solution, a volatile material which is liquid in an ordinary state, or a solution including the volatile material as a medium, supplying the wet skin material between male and female molds, supplying a thermoplastic resin melt between the molds and closing the molds to form the multilayer molded article including the integrally adhered skin material and the thermoplastic resin.

Abstract: A method for manufacturing carbon fiber strand from an acrylic polymer by steps of (a) wet spinning, (b) washing with water to obtain gelled fiber strand and (c) drying, wherein during the drying step the gelled fiber strand is shrunk by about 5 to 15% when the water of the gelled fiber strand is within a range of from about 100 to 20% by weight based on the weight of the dry fiber strand. An acrylic fiber strand without coalescence or entangling of filaments can consistently be obtained, from which carbon fibers with high quality and substantially no coalescence can be produced.

Abstract: A method for fashioning ink channels in a write head for a dot-matrix ink printer means, whereby form needles respectively coated by parting agent and cylindrically surrounded by piezo electric drive elements are aligned in a casting mold in accord with the desired course of the ink channels to be fashioned, are cast out with a casting compound and, after the curing of the latter, are removed upon formation of the respective ink channels partially surrounded by the allocated piezo electric drive elements, and isolation of the drive elements from a writing fluid in the ink channels is achieved in a way that is simple in terms of production engineering. An envelope coat is applied to the form needles coated with parting agent, being applied thereto before they are introduced into the casting mold, this envelope layer forming the inside channel wall of the appertaining ink channel after the removal of the form needles and of the parting agent.

Abstract: A thermoplastic polymer yarn is spun into a spinning tube charged with a pressurized gas of more than 1 kg/cm.sup.2 G and withdrawn through a yarn exit provided with a unique sealing means which substantially prevents the charged gas from leakage but allows passage of the yarn out from the spinning tube. The resultant yarn has a high molecular orientation due to the improved quenching effect and the increase of resistance against yarn travelling of the charged gas.

Abstract: The design process for a motor vehicle component part by making drawings of cross sections of the part at spaced intervals along the surface. Cardboard templates are cut to the cross sectional shape of the inside of the part, and mounted on a rigid base at the same spaced intervals as the spaced intervals of the cross sections of the drawings to define a skeletal frame. A sheet material such as cardboard is adhesively bonded to the skeletal frame, to define a rough model of the part. This rough model is then layered with glass fiber and bonding resin and finished to the desired outside finished surface dimension shown on the drawing. This provides a finished model of the part, or the glass fibers and bonding resin build up may be removed from the cardboard to be a prototype part. Furthermore, the model may be used to make a mold from which a number of prototype parts may be made.

Abstract: A polyamide fiber excellent in strength, which comprises at least one of polycapramide, polyhexamethylene adipamide and polytetramethylene adipamide in an amount of not less than 60% by weight on the basis of the polyamide fiber and which is characterized by having a relative viscosity of not less than 2.3 and less than 3.5 (measured on a 96% by weight sulfuric acid solution having a polyamide concentration of 10 mg/ml at 20.degree. C.), an index of birefringence (.DELTA.n) (measured after 24 hours under the conditions of 30.degree. C. and 80% relative humidity) of not less than 55.times.10.sup.-3 and a tenacity of not less than 12.0 g/d. The method of preparing the noted polyamide fibers includes spinning of the polyamide to produce filaments, cooling the filaments, taking up the filaments to make an index of birefringence of 13.times.10.sup.-3 or less and drawing the filaments so taken up.

Abstract: A method of manufacturing a closed, hollow toroidal structure having a rigid internal annular plate includes treating one annular surface of the plate with a release coating, applying to the other annular surface of the plate an adhesion promoting coating and positioning the plate within a mold having a generally toroidal internal cavity. Next, a fluid conduit is juxtaposed partially within the internal cavity of the mold adjacent to the annular plate and partially outside the internal cavity of the mold. The mold cavity is then filled with an elastomer followed by curing under heat and pressure.

Abstract: A method of producing continuous multifilament yarns of polyethylene terephthalate comprising the steps of extruding the polymer in the molten state, cooling the filaments by blowing, and application of dressing, interlacing and winding. The polymer viscosity is in the range of 0.52 to 0.82. The filaments, on exiting the die, meet a conduit which protects them against air streams. Winding is carried out at rates in the range of 3,500 to 5,500 meters/minute. The fiber yielded by the method has a modulus in the 300 to 500 cN/tex range, tenacity in the range of 30 to 40 cN/tex, ultimate elongation varying from 50% to 80%, and shrinkage in water of between 3% and 8%.

Abstract: An improvement in a high speed process to produce high performance multi-end polyester yarn comprises extruding molten polyester from a spinnerette to form filaments, then cooling, lubricating and advancing the filaments to a forwarding roll system at the speed of from about 1000-4000 meters per minute so that a partially oriented yarn is produced, then feeding the filaments from the forwarding roll system to a first draw roll system to partially draw the yarn, then feeding the paritally drawn yarn to a second draw roll system having a draw point localizing device then feeding the filaments from the draw roll system to a conditioning roll system and finally taking up the filaments. The improvement is the use of matte finish on godet rolls having an arithmetic mean roll surface roughness value of from between about 35 microinches and about 120 microinches to feed and withdraw yarn to and from a draw point localizing device in the second draw roll system.

Abstract: Thread bundles which are transported from top to bottom, can be wetted with liquids by means of a device consisting of a system releasing the liquid, conduits and a storage container as well as suitable transporting means for the liquid, whereby the system releasing the liquid has at least two slotted nozzles positioned one above the other and opposite each other, having a horizontal slot and whereby rods are attached at the slot ends which, seen from above, form an angle with the slot of from 100 to 170.degree., preferably from 115 to 160.degree..

Abstract: Preparation of a novel polyester fiber, such as a poly(ethylene terephthalate) fiber, having at least one continuous groove wherein the surface of the groove is rougher than the surface outside the groove is accomplished through a drafting process involving surface hydrolysis. The fibers have improved cover, softness, and wetting characteristics.

Abstract: A process for the preparation of high-performance grade carbon fibers, which comprises attaching a fine powder of at least one member selected from oxides and carbides of silicon, aluminum, titanium, and boron to a precursor fiber bundle of as spun pitch fibers, subjecting the fiber bundle to an infusibilization treatment, and subjecting the fiber bundle to a carbonization treatment.

Abstract: A process for imparting releasing property to a mold which comprises applying to the mold a composition comprising:(A) (1) a fluorine-containing urethane compound represented by the formula ##STR1## and/or (2) a fluorine-containing urethane compound represented by the formula ##STR2## and/or (3) a fluorine-containing urethane compound represented by the formula ##STR3## and (B) at least one of members selected from the class consisting of silicone oil, silicone varnish, wax and a highly fluorinated organic compound and the mold release composition used for the process.

Abstract: Articles from filaments of thermotropic liquid crystal polymers are formed by pultrusion without use of extraneous binder, wherein the filaments formed in a bundle are essentially parallel to permit the greatest surface contact between adjacent filaments.

Abstract: A process for the reproduction of works of art made of a lithoid material including the use of a silicone rubber to obtain a negative mold of the work of art, wherein a thin layer of a fluorinated grease, based on polytetrafluoroethylene and a liquid perfluoropolyether, is first applied to the work of art.

Abstract: A method of making a mold used in a pressure slip casting process, including the steps of: preparing at least two porous bodies each defining a filter layer having a plurality of channels formed therein for allowing water and air to flow therethrough; placing a reinforcing iron frame and one of the porous bodies on a bottom board with a parting agent applied to its surface; applying a sealing resin to the surface of the other porous body opposite to a molding surface thereof and to a portion of the surface of the bottom board between the box and the porous body; filling up the space between one of the porous bodies and the reinforcing iron frame with a filler; and preparing a second part of the pressure mold.

Abstract: The invention provides a process for simplified spinning of yarns on polyethylene terephthalate, at high speed and with direct take-up on the winder. After leaving the spinning die, the filaments are cooled by a gaseous fluid, simultaneously brought together and oiled at a convergence point situated at a distance L.sub.1 from the die such that L.sub.o .ltoreq.L.sub.1 .ltoreq.(L.sub.o +30)cm, the value of L.sub.o corresponding to the first point at which the derivative of the curve expressing the birefringence of the filaments as a function of the distance (in cm) from the die passes through a maximum, and wound at a speed greater than 4,500 m/min, preferably equal to or greater than 5,000 m/min, the maximum distance between the die and the point of deposition of the yarn on the bobbin being between 100 and 200 cm. The yarns obtained may be used as such or may be textured.

Abstract: On extrusion of thermoplastic melts, flow anomalies occurring in the extrusion dies can be decisively reduced when dies are used whose surfaces coming into contact with the melts are provided with a thermally applied spray coating.

Abstract: A simplified process is provided for spinning polyamide at high speed, with direct take-up on the winder of the filaments produced in which the filaments are cooled transversely under the die by means of a gaseous fluid having a moisture content of approximately 75%, brought together and oiled simultaneously at a distance of between 50 and 80 cm, preferably between 55 and 70 cm, from the die and then wound directly at a speed of at least 5,000 m/min, the maximum distance between the die and the point of contact of the filaments on the bobbin being between 130 cm and 200 cm. The yarns obtained can be used as such or may be textured according to any known means.

Abstract: Barriers used for separating silicone pressurizing medium from articles during curing, thereby protecting the article from silicone contamination. A composite precursor is substantially encapsulated by a barrier coating that is capable of substantially separating the composite precursor from silicone polymers at elevated temperatures during curing. The barrier coating is also capable of being chemically removed from the composite precursor subsequent to its cure without substantially damaging the composite. Composites are molded by protecting a composite precursor from a silicone pressurizing medium during curing utilizing a barrier coating. The method comprises encapsulating a composite precursor with a coating that is substantially capable of separating the composite precursor from silicone polymers at elevated temperatures. The coating is also capable of being chemically removed from the composite without damaging the composite.